NYC subway fare hike pizza principle

The Pizza Principle holds that there is a direct correlation between the rising cost of a plain slice in New York and a subway ride.

Times have changes since the principle was popularized; for one, the proliferation of 99 cent joints. So does it hold true? Here is amNewYork's highly unscientific survey of how much a plain slice costs:

Here is amNewYork's highly unscientific survey of how much a plain slice costs: